1
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var arrayPush = require('./_arrayPush'),
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2
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baseFlatten = require('./_baseFlatten'),
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3
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copyArray = require('./_copyArray'),
|
4
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isArray = require('./isArray');
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5
|
|
6
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/**
|
7
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* Creates a new array concatenating `array` with any additional arrays
|
8
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* and/or values.
|
9
|
*
|
10
|
* @static
|
11
|
* @memberOf _
|
12
|
* @since 4.0.0
|
13
|
* @category Array
|
14
|
* @param {Array} array The array to concatenate.
|
15
|
* @param {...*} [values] The values to concatenate.
|
16
|
* @returns {Array} Returns the new concatenated array.
|
17
|
* @example
|
18
|
*
|
19
|
* var array = [1];
|
20
|
* var other = _.concat(array, 2, [3], [[4]]);
|
21
|
*
|
22
|
* console.log(other);
|
23
|
* // => [1, 2, 3, [4]]
|
24
|
*
|
25
|
* console.log(array);
|
26
|
* // => [1]
|
27
|
*/
|
28
|
function concat() {
|
29
|
var length = arguments.length;
|
30
|
if (!length) {
|
31
|
return [];
|
32
|
}
|
33
|
var args = Array(length - 1),
|
34
|
array = arguments[0],
|
35
|
index = length;
|
36
|
|
37
|
while (index--) {
|
38
|
args[index - 1] = arguments[index];
|
39
|
}
|
40
|
return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
|
41
|
}
|
42
|
|
43
|
module.exports = concat;
|